diff options
Diffstat (limited to 'src/gallium/drivers/softpipe/sp_setup.c')
-rw-r--r-- | src/gallium/drivers/softpipe/sp_setup.c | 52 |
1 files changed, 20 insertions, 32 deletions
diff --git a/src/gallium/drivers/softpipe/sp_setup.c b/src/gallium/drivers/softpipe/sp_setup.c index 86354664e4b..5d727dc00df 100644 --- a/src/gallium/drivers/softpipe/sp_setup.c +++ b/src/gallium/drivers/softpipe/sp_setup.c @@ -111,34 +111,13 @@ struct setup_context { uint numFragsWritten; /**< per primitive */ #endif - unsigned winding; /* which winding to cull */ + unsigned cull_face; /* which faces cull */ unsigned nr_vertex_attrs; }; -/** - * Do triangle cull test using tri determinant (sign indicates orientation) - * \return true if triangle is to be culled. - */ -static INLINE boolean -cull_tri(const struct setup_context *setup, float det) -{ - if (det != 0) { - /* if (det < 0 then Z points toward camera and triangle is - * counter-clockwise winding. - */ - unsigned winding = (det < 0) ? PIPE_WINDING_CCW : PIPE_WINDING_CW; - - if ((winding & setup->winding) == 0) - return FALSE; - } - - /* Culled: - */ - return TRUE; -} @@ -304,7 +283,10 @@ setup_sort_vertices(struct setup_context *setup, const float (*v1)[4], const float (*v2)[4]) { - setup->vprovoke = v2; + if (setup->softpipe->rasterizer->flatshade_first) + setup->vprovoke = v0; + else + setup->vprovoke = v2; /* determine bottom to top order of vertices */ { @@ -390,8 +372,16 @@ setup_sort_vertices(struct setup_context *setup, * 0 = front-facing, 1 = back-facing */ setup->facing = - ((det > 0.0) ^ - (setup->softpipe->rasterizer->front_winding == PIPE_WINDING_CW)); + ((det < 0.0) ^ + (setup->softpipe->rasterizer->front_ccw)); + + { + unsigned face = setup->facing == 0 ? PIPE_FACE_FRONT : PIPE_FACE_BACK; + + if (face & setup->cull_face) + return FALSE; + } + /* Prepare pixel offset for rasterisation: * - pixel center (0.5, 0.5) for GL, or @@ -829,11 +819,9 @@ sp_setup_tri(struct setup_context *setup, setup->numFragsWritten = 0; #endif - if (cull_tri( setup, det )) - return; - if (!setup_sort_vertices( setup, det, v0, v1, v2 )) return; + setup_tri_coefficients( setup ); setup_tri_edges( setup ); @@ -1417,14 +1405,14 @@ sp_setup_prepare(struct setup_context *setup) sp->quad.first->begin( sp->quad.first ); if (sp->reduced_api_prim == PIPE_PRIM_TRIANGLES && - sp->rasterizer->fill_cw == PIPE_POLYGON_MODE_FILL && - sp->rasterizer->fill_ccw == PIPE_POLYGON_MODE_FILL) { + sp->rasterizer->fill_front == PIPE_POLYGON_MODE_FILL && + sp->rasterizer->fill_back == PIPE_POLYGON_MODE_FILL) { /* we'll do culling */ - setup->winding = sp->rasterizer->cull_mode; + setup->cull_face = sp->rasterizer->cull_face; } else { /* 'draw' will do culling */ - setup->winding = PIPE_WINDING_NONE; + setup->cull_face = PIPE_FACE_NONE; } } |